EP 1785697 A4 20091230 - POSITION SENSOR
Title (en)
POSITION SENSOR
Title (de)
POSITIONSGEBER
Title (fr)
CAPTEUR DE POSITION
Publication
Application
Priority
- JP 2006309532 W 20060512
- JP 2005140207 A 20050512
- JP 2005140208 A 20050512
Abstract (en)
[origin: EP1785697A1] A position sensor with excellent linearity of coil impedance is provided. This position sensor is equipped with a tubular detection coil, a magnetic core movable in the detection coil, a drive circuit for the detection coil, a signal processing circuit for converting a change in impedance of the detection coil into an electric signal, and a shield member disposed around the detection coil. The shield member is a tubular member having a first inner surface for surrounding an axial region of the detection coil, and a second inner surface for surrounding another axial region of the detection coil. The tubular member is formed such that a distance between the second inner surface and the detection coil is smaller than the distance between the first inner surface and the detection coil.
IPC 8 full level
G01D 5/20 (2006.01)
CPC (source: EP KR US)
G01D 3/02 (2013.01 - EP US); G01D 5/20 (2013.01 - KR); G01D 5/2013 (2013.01 - EP US)
Citation (search report)
- [Y] US 5003258 A 19910326 - MANCINI NICOLAS [CH]
- [Y] US 3891918 A 19750624 - ELLIS JAMES F
- [Y] US 5206587 A 19930427 - ROSE MITCHELL [US]
- See references of WO 2006121145A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1785697 A1 20070516; EP 1785697 A4 20091230; EP 1785697 B1 20130731; EP 1785697 B8 20131113; EP 1881298 A1 20080123; EP 1881298 A4 20090617; EP 2236989 A2 20101006; EP 2236989 A3 20121212; EP 2244067 A2 20101027; EP 2244067 A3 20131030; EP 2244068 A2 20101027; EP 2244068 A3 20131030; KR 100820262 B1 20080408; KR 100868011 B1 20081110; KR 20070054721 A 20070529; KR 20070069145 A 20070702; US 2008258739 A1 20081023; US 2008315868 A1 20081225; US 7598734 B2 20091006; US 7679361 B2 20100316; WO 2006121145 A1 20061116; WO 2006121146 A1 20061116
DOCDB simple family (application)
EP 06746329 A 20060512; EP 06746331 A 20060512; EP 10006298 A 20060512; EP 10172380 A 20060512; EP 10172383 A 20060512; JP 2006309532 W 20060512; JP 2006309534 W 20060512; KR 20077006368 A 20070320; KR 20077008229 A 20070411; US 57461006 A 20060512; US 57500906 A 20060512